An American Eagle Embraer E170 jet passes in front of the iconic Hollywood sign while on final approach to Los Angeles International Airport on Nov. 8, 2015. Jeremy Dwyer-Lindgren, Special for USA TODAY

The skyline of New York. American counts its operations operations at JFK and LaGuardia airports as a combined hub, though the airports are separated by a considerable cab ride during normal traffic conditions.LaGuardia was American's eighth-busiest hub (by passengers) in 2015. JFK was ninth. Mark Lennihan, AP

American Airlines will begin flying to Iceland, becoming the last of the USA’s “big three” legacy carriers to add service to the nation.

American’s service will begin June 7, when the airline launches daily non-stop service from its hub at Dallas/Fort Worth to Reykjavik. The seasonal flights will continue through Oct. 27. American will fly the route on 176-seat Boeing 757-200 jets that include 16 lie-flat business-class seats.

American’s Iceland service continues what’s become a flood of new flight options to the European island nation. It also could suggest that the big U.S. airlines are pushing back against the dozens of new routes that Icelandic carriers have added here in recent years.

For decades, U.S. travelers have been able to fly to the country on Icelandair, which also sells connecting flights to numerous European destinations via its hub near the capital of Reykjavik. Over the years, Icelandair has cultivated a reputation for offering inexpensive flights to Europe, even though it has traditionally operated as something close to a full-service carrier and includes a business-class cabin.

But options between the U.S. and Iceland have proliferated this decade amid an increasingly competitive landscape.

Seven-year old Xavier, left, and his brothers Dominic and Luke pose for a photo in front of a vintage airplane at the annual Paine Field Aviation Day in Everett, Wash., on May 20, 2017. Jeremy Dwyer-Lindgren, special for USA TODAY

A Memorial Day cemetery service underway receives a flyover from Historic Flight Foundation's World War II-era B-25 bomber during a special Memorial Day flight on May 29, 2017. Jeremy Dwyer-Lindgren, special for USA TODAY

A member of a tug team prepares the first Boeing 737-900 to be towed over to Delta's new Terminal 3 digs at Los Angeles International Airport on May 13, 2017, during a major relocation effort that saw 15 airlines shifting in five nights. Jeremy Dwyer-Lindgren, special for USA TODAY

A worker polishes off a newly-installed sign at Terminal 3 at Los Angeles International Airport on May 13, 2017 during a major relocation effort that saw 15 airlines shifting in five nights. Jeremy Dwyer-Lindgren, special for USA TODAY

Pilot John Sessions with the Historic Flight Foundation lines up his vintage Beaver aircraft with runway 34L at Paine Field, near Everett, Wash., on May 29, 2017. Jeremy Dwyer-Lindgren, special for USA TODAY

Delta began flying to Reykjavik in 2011, adding a seasonal route from New York JFK that made it the only U.S. carrier to serve the country at the time.

Earlier this year, United became the second U.S. carrier to announce service to Iceland when it said it would begin seasonal service from Newark to Reykjavik. Those flights are scheduled to begin May 23.

Now, with American’s just-announced flights from Dallas/Fort Worth, all three of the USA’s big global carriers are selling tickets to Iceland.

But their rush to serve Iceland is perhaps fueled as much by fending off low-cost competition as it is by keeping up with each other.

WOW Air, an upstart Icelandic “ultra low-cost carrier,” has led the way with a breakneck expansion pace. Despite launching U.S. service just two years ago, WOW is now selling tickets from 14 U.S. cities. It’s even expanded into the Heartland, bringing trans-Atlantic Iceland service to cities like Cleveland, Cincinnati and St. Louis.

But what’s made WOW so disruptive are its cut-rate fares as low as $69 one-way. Those fares -- numerous fees not included -- have been offered not only on its flights to Iceland, but also on connecting itineraries to destinations such as Berlin, London and Paris.

A United Airlines Boeing 747-400 takes off from a busy San Francisco International Airport in March, 2017. United will retire the venerable jet from its fleet by the end of 2017. Jeremy Dwyer-Lindgren, special for USA TODAY

Virgin Atlantic founder and U.K. entreprenuer Sir Richard Branson takes questions from the press during the launch of the airline's new London-Seattle route, in Seattle, on March 27, 2017. Jeremy Dwyer-Lindgren, special for USA TODAY

Members of the media explore the cabin of Cathay Pacific's new Airbus A350-900 during its first visit to Vancouver, Canada, on March 28, 2017. The event marked the first regularly scheduled A350 service for Canada. Jeremy Dwyer-Lindgren, special for USA TODAY

Members of the media explore the cabin of Cathay Pacific's new Airbus A350-900 during its first visit to Vancouver, Canada, on March 28, 2017. The event marked the first regularly scheduled A350 service for Canada. Jeremy Dwyer-Lindgren, special for USA TODAY

A Cathay Pacific Airbus A350-900 takes off from Vancouver International Airport in British Columbia for Hong Kong on March 28, 2017 - the first scheduled A350 service to Canada. Jeremy Dwyer-Lindgren / special